blink: Cleanup class forward declarations

third_party/WebKit/Source/modules/indexeddb/IDBTransaction.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 32 matching lines @@
 
 namespace blink {
 
 class DOMException;
 class ExecutionContext;
 class ExceptionState;
 class IDBDatabase;
 class IDBIndex;
 class IDBObjectStore;
 class IDBOpenDBRequest;
+class IDBRequest;
 class ScriptState;
 
 class MODULES_EXPORT IDBTransaction final : public EventTargetWithInlineData,
                                             public ActiveScriptWrappable,
                                             public ActiveDOMObject {
   USING_GARBAGE_COLLECTED_MIXIN(IDBTransaction);
   DEFINE_WRAPPERTYPEINFO();
 
  public:
   static IDBTransaction* createNonVersionChange(ScriptState*,
@@ skipping 179 matching lines @@
   // This does not include a snapshot of the database's object store / index
   // metadata.
   //
   // Only valid for versionchange transactions.
   IDBDatabaseMetadata m_oldDatabaseMetadata;
 };
 
 }  // namespace blink
 
 #endif  // IDBTransaction_h